68 lines
1.8 KiB
C++
68 lines
1.8 KiB
C++
// Copyright (c) 2015 GitHub, Inc.
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// Use of this source code is governed by the MIT license that can be
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// found in the LICENSE file.
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#ifndef ELECTRON_SHELL_BROWSER_NOTIFICATIONS_WIN_WIN32_DESKTOP_NOTIFICATIONS_COMMON_H_
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#define ELECTRON_SHELL_BROWSER_NOTIFICATIONS_WIN_WIN32_DESKTOP_NOTIFICATIONS_COMMON_H_
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#include <Windows.h>
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namespace electron {
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struct NotificationData {
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DesktopNotificationController* controller = nullptr;
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std::u16string caption;
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std::u16string body_text;
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HBITMAP image = NULL;
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NotificationData() = default;
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~NotificationData() {
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if (image)
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DeleteObject(image);
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}
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NotificationData(const NotificationData& other) = delete;
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NotificationData& operator=(const NotificationData& other) = delete;
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};
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template <typename T>
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constexpr T ScaleForDpi(T value, unsigned dpi, unsigned source_dpi = 96) {
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return value * dpi / source_dpi;
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}
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struct ScreenMetrics {
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UINT dpi_x, dpi_y;
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ScreenMetrics() {
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typedef HRESULT WINAPI GetDpiForMonitor_t(HMONITOR, int, UINT*, UINT*);
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auto GetDpiForMonitor = reinterpret_cast<GetDpiForMonitor_t*>(
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GetProcAddress(GetModuleHandle(TEXT("shcore")), "GetDpiForMonitor"));
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if (GetDpiForMonitor) {
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auto* monitor = MonitorFromPoint({}, MONITOR_DEFAULTTOPRIMARY);
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if (GetDpiForMonitor(monitor, 0, &dpi_x, &dpi_y) == S_OK)
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return;
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}
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HDC hdc = GetDC(NULL);
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dpi_x = GetDeviceCaps(hdc, LOGPIXELSX);
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dpi_y = GetDeviceCaps(hdc, LOGPIXELSY);
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ReleaseDC(NULL, hdc);
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}
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template <class T>
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T X(T value) const {
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return ScaleForDpi(value, dpi_x);
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}
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template <class T>
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T Y(T value) const {
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return ScaleForDpi(value, dpi_y);
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}
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};
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} // namespace electron
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#endif // ELECTRON_SHELL_BROWSER_NOTIFICATIONS_WIN_WIN32_DESKTOP_NOTIFICATIONS_COMMON_H_
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